85346830861 has 4 divisors (see below), whose sum is σ = 87428460924. Its totient is φ = 83265200800.

The previous prime is 85346830859. The next prime is 85346830883. The reversal of 85346830861 is 16803864358.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16803864358 = 2 ⋅8401932179.

It can be written as a sum of positive squares in 2 ways, for example, as 35747086761 + 49599744100 = 189069^2 + 222710^2 .

It is a cyclic number.

It is not a de Polignac number, because 85346830861 - 2¹ = 85346830859 is a prime.

It is a super-2 number, since 2×85346830861² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85346830799 and 85346830808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85346830801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1040814970 + ... + 1040815051.

It is an arithmetic number, because the mean of its divisors is an integer number (21857115231).

Almost surely, 2^85346830861 is an apocalyptic number.

It is an amenable number.

85346830861 is a deficient number, since it is larger than the sum of its proper divisors (2081630063).

85346830861 is a wasteful number, since it uses less digits than its factorization.

85346830861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2081630062.

The product of its (nonzero) digits is 3317760, while the sum is 52.

The spelling of 85346830861 in words is "eighty-five billion, three hundred forty-six million, eight hundred thirty thousand, eight hundred sixty-one".